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Reza Pourimani

Reza Pourimani

Academic rank: Professor
ORCID: https://orcid.org/0000-0002-0102-0578
Education: PhD.
ScopusId: 6505565793
Faculty: Science
Address: Arak University
Phone:

Research

Title
Risk assessment of natural radionuclide contamination in lead-zinc sulfide ores mining
Type
JournalPaper
Keywords
Radionuclides, Zinc-Lead ore, Dose, gamma-ray
Year
2021
Journal Iranian Journal of Science and Technology
DOI
Researchers Mansoureh Tatari ، Reza Pourimani

Abstract

Lead and zinc ores are the most important natural raw materials widely used in the industry. These types of ores contain different amounts of radionuclides that expose workers to radiation during extraction, transport, and processing. In this study, 22 samples were collected, including 18 samples of lead-zinc ore and 4 samples of mining waste. Specific activities of 226Ra, 232Th and 40K were determined using a high purity germanium gamma radiation detector (HPGe). The specific activities of corresponding radionuclides in lead-zinc ore samples varied in the range (<0.21–107.61), (1.91–48.13) and (<10.16–664.04) in Bq/kg, respectively. According to the European Commission's dose assessment instruction for workers, the effective dose absorption was calculated for different scenarios, as transport, outdoor storage, and internal storage, which varied from 0.76-10.23µSv/y, 1.05-17.00 µSv/y and 1.20 - 19.20 µSv/y, respectively. For all lead-zinc ore samples, effective doses in various scenarios were lower than the intervention level (1.0 × 103 μSv/y) determined by the International Commission on Radiological Protection (ICRP).